Incinerator grate



May 26, 1931.

H. GINNEL INCINERATOR GRATE Filed June 15. 1929 INVENTOR fiemy Gila/2e ATTORNEYS Patented May 26, 1931 UNITED STATES CONSTRUCTION COMPANY, me, A, oonrolmrioNor NEW YORK INcINERAToRe' Tii Application filed June 15,

In the construction of large incinerator grates for municipalities and the like, it is customary to form an extended bed for combustion. This bed is principally made up of fixed grate bars and only a small part is adapted to be tilted for dumping. It is necessary, however, for this part to provide a large opening so that tin cans and the like can be dropped through. As the grate bars must be made of heavy material, the operation of the portion of the grate which is dropped is ordinarily rather onerous. According to the present invention, I have designed an arrangement of'grates whereby a portion may be dropped down on a pivot but is normally braced so that it is held rigidly in place and is counterweighted from below so that it may easily be moved back into position. i

This invention may be readily understood from the illustrative example shown in the accompanying drawings in which Fig. 1 is a plan view, with a portion broken away, of the front part of the grate chamber showing the tilting plates; Fig. 2 is a sectional view of the parts shown in Fig. 1, and also indicating the position of thefixed grates; Fig. 3 is a view of certain of the parts shown in Fig. 2 but in different position, and Fig. 4 is a diagrammatic View showing a slight modification.

The grate chamber is provided with fixed grates 10 in front of which are the movable grates 12, two of which are here shown coupled together to be operated simultaneously. In front of the movable grates 12 is a platform 14. It is noted that the fixed grates 10 are at a slight angle so that after .the movable grates 12 have been dropped,

rubbish and ashes may easily be raked forward to pass through the opening thus provided.

The tilting grates 12 are pivoted in any desired way as by the integral pins 16 which 'fixed grates 10. At the center lower portion of each grate 12 is a lug 20 to which is pivoted a support arm 22. The support arm 22 is pivoted to the support 24 which hung a weight 42 1929. 'Se ria1 No. 3 71,0811

in turn is carried by'the' squared rock-shaft 26 pivoted to the main frame 28 so thatv members 22 and 24 form a toggle joint, The arm; 22 is providedawith a' lug 30. and the'arm'24 is providedwith a lug. 32 through which passes a bolt 34 so that the maximum downward movement of the toggle'past the dead-centercan be readily adjusted. Inthe present-instance, bot-h grates '12 are intended to'be operated simultaneously and therefore they are connected to a common rock-shaft 26. .Fixed on the shaft 26 is an arm 36 eX- tendinglthrough the front frame 28 and provided with a socket 38 intended to receive thezoperating lever 40. Adjacent the 'pivot between, the members 22 and 24 is which-is here shown in the form of the ordinary scale weight so that the same may be readily increased or decreased. As shown inFig. 1- this weight is-slightly offset so the movement ofmembers22 and 24. "While it is preferable to have this weightadjust able, this is not. essential and this weight maybe cast as an integral part of members 22 and 24, or either of them. 1

In Fig. 2, members 22 and 24 are shown with their pivots all in line so. these members are exactly on dead center. With the parts in this position,thevgrate 12 will be held infposition unless the toggle slips up, and this. .is prevented by v c0urse,"if desired, :bolt 34 could be screwed backward a little bit so that the toggle would be in a more perfect state of equilibrium, but the adjustment. should be such that no substantial lifting ofgrate .12 is necessary to break the toggle upwardly. When a pull downandout is exerted on lever 40,:weight 42tis;raised a: very short distance,- breaking the toggle upward. The weight of grate 12an'd of the material resting on .it then pushes back on member 22,

pushing'member 24 up-to the position shown.

as, not to interfere with HENRY GINNEL, or scARsDALE, NEW YORK,A$S1GNOR m-maa ENGINEERING s:

the Weight 42. .Of

close approxlmation to equilibrium between.

the weight of grate 12 and the downward pull of weight 42. A relatively light upward push on lever 40 will restore the parts s and an upwardly extending bar-4c8 pivoted ,10

to the aligned position shown in Fig. 2, V

where they will automatically lock in place.

In some instances the grates are raised a substantial distance above the floor so that it is not practicable to attach the leverdirectly to the r0cksliaft 26. Inlsucha case-I provide-an auxiliary lever 44ers indicated in Fig. 4.v This is provided with a handle $6 on the lever 44; and pivoted "to mem'ber24z adjacent to toggle joint. The operation of this device will be identicalwith that heretofore described except that in this'ins'tance the weight W may be slightly less than weight 42 owing to the tendency of members'l l and 48 to counterbalance the weight of'zthe grate 12'. l s V What I claim is: I

:1; In combinatioma pivotedgrateadapt ed to :swing downwardly, a member pivoted to'zthevunderside of such grate, a sec- 0nd memberpivot'ed toa fixedesupporlt and to said firstmember to "form atogglejoint, means for preventing said toggle from breaking downwardly, means whereby :said toggle may be broken upwardly, 1 and a counterweight. connected with said members near said toggle joint adapted toassist in preventing said toggle from accidentally breaking upwardly and adapted partly to counterbalance the weight of saidglrate.

In combination, a pivoted grate adapted to swing downwardly, a pair of toggle members diagonally connecting itheunderside of said" grate with a fixed support,

7 means whereby said tog-gle may be prevented from breaking downwardly substantially 1' resist such upward "breaking beyond dead-center, means for breaking said toggle upwardly, and a wei-ght tend-ingto and thereby tending to counterbalance'theweight of the grate. v, im

..-:3::A structure as specified in claim .2 which includes adjustable Jmeans :Eor l llm ib ing the downward break of l the toggle.

":4; A structurdas specified in claim '2 in which the weightspecified adjustable! :5; In combination, a movable .grateportion pivoted near one side, a pair of toggle a-rins connecting such grateiportion with a' rock-shaft in such a way as to form aidiagonalsupport forithe 'free edge of said grate-portionwhen said toggle members lare 1 alignedy means whereby said toggles may be prevented from breaking downwardly,

a weightad-apted to resist npiwardibnealnng of the-toggles and to urge.the:to,ggle anembers towards a line positionwhen saidioggles are brokemand a lever-aconnectedwfith saidwrock-shaft whereby saic'btogglesmay be broken upwardly or ,I'BtuHIled'jtOiitihe: aligned position. i

time 

